Electronic control device and method for reducing stand-by state energy consumption of an electric household appliance

Household appliance (1) comprising electric loads (2) and an electronic command device (3) which is configured to reduce energy consumption of the electric household appliance (1) during a standby state; the electronic command device (3) comprising first switch device (4) which is connected between the household appliance electric loads (2) and supply lines (31,32), and is configured to switch on/off based on a first control signal (SFC); sensing device (33) which is configured to sense the first electrical quantity (VA) on the supply lines (31,32), and is configured to generate a sensing signal (SHV) which is indicative of the sensed first electrical quantity (VA); electric control unit (20), which is configured to provide the first control signal (SFC) to cause the first switch device (4) to be open/closed, based on the sensing signal (SHV); a second switch device (40) connected between the sensing device (33) and the supply lines (31,32) and configured to be open/closed on the basis of a second control signal (SVS), to cause the sensing device (33) to be connected/disconnected respectively to/from supply lines (31,32). The electric control unit (20) generates the second control signal (SVS) to open said second switch device (40) based on a standby command/request which is indicative of a request of transition of the household appliance (1) from the operating state to the standby state.